1" x 100' 20 Mil Corrosion Protection Pipe Wrap Tape 28-PWTP12-2 Corrosion protection for metal piping systems above and below ground Corrosion protection for fittings and joints on mill coated pipe Corrosion protection of electrical conduit & fittings Resists corrosive action by salt water, soil acids, alkalies and salts Prevents dielectric corrosion between buried steel pipe and soil minerals